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How to decrypt ISN from CAS3+ dump with а working key
21-05-2023, 16:02 PM,
Post: #1
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How to decrypt ISN from CAS3+ dump with а working key
Hello,
I would like to share the process of decryption of the ISN from CAS3+ dump when we have a working key.
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02-09-2023, 01:40 AM,
Post: #2
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RE: How to decrypt ISN from CAS3+ dump with а working key
Damn, would be awesome if its working.
Does it work with all long ISN ? What if i have short ISN from DME but tango/Hitag asks me for Long isn to write key? It wont accept my short isn since its asking for the 128bit version. How to solve this ? |
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06-09-2023, 14:33 PM,
Post: #3
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RE: How to decrypt ISN from CAS3+ dump with а working key
(02-09-2023, 01:40 AM)xMoses Wrote: What if i have short ISN from DME but tango/Hitag asks me for Long isn to write key? Describe how did you get this... |
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06-09-2023, 16:36 PM,
Post: #4
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RE: How to decrypt ISN from CAS3+ dump with а working key
(06-09-2023, 14:33 PM)____ANGEL___ Wrote:(02-09-2023, 01:40 AM)xMoses Wrote: What if i have short ISN from DME but tango/Hitag asks me for Long isn to write key? read it out with bmw explorer, could only read short isn... Car has no long isn but still tangos asks for it |
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12-10-2023, 14:02 PM,
Post: #5
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RE: How to decrypt ISN from CAS3+ dump with а working key
(06-09-2023, 16:36 PM)xMoses Wrote:Some can get long ISN from short ISN for a fee, i didn't figure out how they do it, to solve this one time i changed encrypted eeprom with new unencrypted eeprom.(06-09-2023, 14:33 PM)____ANGEL___ Wrote:(02-09-2023, 01:40 AM)xMoses Wrote: What if i have short ISN from DME but tango/Hitag asks me for Long isn to write key? |
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11-01-2024, 11:01 AM,
Post: #6
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RE: How to decrypt ISN from CAS3+ dump with а working key
(21-05-2023, 16:02 PM)kalosbg Wrote: Hello, So i wanted to try out ur calculation. Ive came across the fact that my TMCF/PSW of my china key is 00 00 00 and the crypted config psw is 8F 98 1D. If i calculate that against obvoiusly 0, i get 8F 98 1D as an result, if i swap bytes and paste it in 6x and delete the last 4 characters, i end up with an wrong ISN. (I know the right ISN, just wanted to try out ur calculation). What could cause that ? The key with 00 00 00 is working. the real and working ISN is: 3FFA6898026A3759AB7B0736075AA367 Am I missing something ? |
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31-01-2024, 16:23 PM,
Post: #7
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RE: How to decrypt ISN from CAS3+ dump with а working key
Hello xMoses,
To read the TMCF/PSW from the key you have to enter the correct secret as mentioned on step "Enter the Crypto/ISK Low and High to the Hitag2 compatible reader and read all key data (4) " Regards, |
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01-02-2024, 08:18 AM,
Post: #8
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RE: How to decrypt ISN from CAS3+ dump with а working key
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